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TcpListener.Active Property

Gets a value that indicates whether TcpListener is actively listening for client connections.

Namespace:  System.Net.Sockets
Assembly:  System (in System.dll)

'Declaration
Protected ReadOnly Property Active As Boolean

Property Value

Type: System.Boolean
true if TcpListener is actively listening; otherwise, false.

Classes deriving from TcpListener can use this property to determine if the Socket is currently listening for incoming connection attempts. The Active property can be used to avoid redundant Start attempts.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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